Finally I think I got it !

[hansvonlieven]

It is not a question of weight within the tube but of pressure.

In order to lift a water column 1 meter you need 100 g/cm2. That means if the surface area of your cylinder is 100 cm2 the weight needs to be 10 kg just to establish equilibrium, more if you want to lift.

Hans von Lieven

[tbird]

Gravitator I have waited on a reply long enough.

Greetings All

I am publishing this Design under copyright. Feel free to use the information to build any device you wish. When it comes to commercial exploitation I reserve whatever rights are given to my by law.

hi alan,

i think this design has the same problem Gravitator's does.  the amount of space the fully expanded bellows has is not enough to hold enough weight (water) to over come the leverage loss of the weight on the side the water is being sent to and the gain of the weight (leverage) going to the colasped bellows side.

there might be one thing that saves it.  the leverage of the water in the bellows is greater in your design, so it might work.  in my reply #29, the weight is at the end and 10% from the end.  in yours, the weight crosses the fulcrum.  this is kinda bad in itself because you are not only giving up leverage, but also real weight.  if we divided the weight into 2 equal parts and had a space betwen (stroke distance) so no more than half the weight was on 1 side of the fulcrum,  maybe it would stand a better chance.

if you have already done the math, let us know how much weight you have available to make it titter.

tom

[AB Hammer]

It is not a question of weight within the tube but of pressure.

In order to lift a water column 1 meter you need 100 g/cm2. That means if the surface area of your cylinder is 100 cm2 the weight needs to be 10 kg just to establish equilibrium, more if you want to lift.

Hans von Lieven

Hans

I am in agreement and that is the reason if it could work it would be very slow. The best part of it though is that there is plenty of time to run it. as it falls to one side the weight starts sliding. The hole size doesn't have to be that big so that it will fit above equilibrium equation. As the little water coming up the small intake it starts to fill the upper bellows. Now as it fills it, it also increases the weight of the weight going down to help pump the water out. I can see where it would possible work but it would have very little use outside of an oddity. IMHO

[wizkycho]

wizkycho

Yet another interesting pump idea. But what is going to operate the valves? I don't see natural reaction being able to do it as easily. It looks to me by your drawings that you will need a shift system for the valves and they will be under pressure remember this.

presssure of water is important only when valve needs to close or open, and when that is needed there is no preassure at valves so valves easily opens and closes. (pause GIF animation at top and bottom points of MP). Valves can be/are already constructed when closed withstands presassure without investing E in them. E is needed only WHILE opening or closing and only small ammount cause when that needs to happen there is no preassure negative nor positive.
...for operating valves there is need for only a fraction of mechanicall energy of MP and/or gravity energy of water. (I didn't draw it in animation cause it would interfere with clearity of main principle of work)

Wiz

[hansvonlieven]

@ wizkycho,

You should really do some reading on hydraulics and hydrostatics. It is evident that you don't understand even the most basic premises.

Hans von Lieven